Expanding device for pump-pistons.



S. GAUTSGHB.

EXPANDING DEVICE FOR PUMP PISTONS.

APPLICATION FILED JAN. 17, 1908.

. Patented Apr. 27, 1909.

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S. GAUTSGHE.

EXPANDING DEVICE FOR PUMP APPLIOATION rum) an. 11,

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, [Specification dinette Patent. Patented a rn 27, 1909,

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Be a known that 1, sinus]. Gram, citizen of the United States, residingat Meta mora, in the county of Wo odford and. State of Illinois, haveinvented certain new and useful Improvements, in Expanding Devices forPump-Pistons, and do hereby declare that the following is a full, clear,and exact description of the invention, which will enable others skilledin the art to which it. appertains to make and use the same. v

This invention pertains to improvements in pump pistons, relating moreparticularly to means for adjusting the packing or leather carried bythe piston. v

The invention further'relates to means for automatically spreading thepump leather as it wears so as to'make and maintain a water tightpacking. j

In the appendeddrawings forming part of this ap lication, Figure 1 reresents a sectional e evation of a' cylinder s owing part of said rod towhich t parted by means of a nut L. It will be noted my im roved'mechanism. Fig. 2 is a sectional e evation of another part of theinvention. Fig. 3 is a top view of a leather spreading member. Flg. 4 isa top view of a piston member shown in Fig. 2. ig. 5 is an elevation ofthe two cylinders shown in Figs. 1 and- 2.

My device is applicable to all kinds of umps. In single acting pumpseither one of the forms shown in the first two figures can be employed,and for force pumps both forms are used in conjunction.

A indicates an upper cylinder, and B indicates a lower one. Extendingvertically through both cylinders is a plston-rod O, which near its upigr end, Fig. 1, carries an adjustable washer having beneath it aninverted cu shaped leather packing E. Beneath an withln said packing Eis a washer F held in p G, there a so being a nut H above the Washer Dby means of which the packing can be firmly clamped and held betweenboth washers as will be understood.

Carried slidably on the rod 0 beneath the packing E is a cupped member Jwhose greatest diameter is nearly that of the inside of the cylinder asshown being tapered toward its to to enter the packlng as clearly shown.T 's said cupped member is forced into and held snugly within thepacking by surrounding the means of a spiral splrnig K e eslredtension-1s 1mlace against the packing by a nut sure upward against themember will cause the latter to keep an outward or spreading pressureagainst the leather thereby maintaining a water tight joint betweentheleather and its cylinder.

Thepiston rod 0 extends downward into the lowereylinder and itsextremity carries an open taperedmember M having a threadedbore N,-Figs. 2 and 4, which receives a valve-seat member 0 b means of anupwardly extending exteriorly threaded portion P, there being the usualflap-valve member Q seated upon said portion P as shown. Clamped betweenthe two members M and O is a cupped leather R similar to E abovedescribe but reversed in position. Entering said cupped leather is a sreader S corre-- sponding to J already descri ed said member L beingslidable on the rod and held with a downward pressure into the leathercup by means of a spring T to which the desired tension is applied .bythe use of a nut U on the rod 0. In this portion of the mechanism itwill be seen that the, operation of the s reading parts is identicalwith that alrea y explained for the iston in the cylinder A.

' As shown in ig. 5 the cylinders A and B are used in conjunction withthe pistons shown in Figs. 1 and 2 when the apparatus is to be used forpumping water under pressure. In 0 eration, as the piston in the lowercylin er descends the water raises the flap-valve Q and passes u wardinto the upper part of the cylinder each upward stroke raising the waterby means of the packing R and the continued action of the piston raisesthe water into the cylinder A which is now filled beneath the pistonwithin the latter cylinder. A downward stroke of the piston-rod now putsthe Water between the two pistons under pressure by reason of thesimultaneous entrance of that the pressure is put upon the water in thevicinity of the bottom of the well without having to raise the water bysuction. By locating it in the well the water may be forced to anydistance whereas by suction itsaction would be limited by the well knownphysical law. As hereinbefore stated either one of the positions may beused to raise the that the spring by having a continual preswater bysuction, if desired, althou h as amatter of fact the upper piston wo dhave to be inverte'dand provided with a flapvalve similar to the lowerone described. It is to be seen that the water in the pumping operationwill raise above the lower iston but cannot pass downward again whi ethe water can raise u to the upper one but cannot'pass beyond 1t butmust be forced from beneath it to the exit by reason oi the in-' vertedleather and the spreadingaction due to the member F and the s ringtension.

I am aware that cuppe jacking leathers have been used heretofore inpumps so that I do not claim anything on this feature alone. I am alsoaware that equivalents of said members have been employedin other artswith which means have been combined to wear.

for spreadin them into contact with the cylinder wal 'in which theytravel to allow for the continual reduction in diameter due I amnotaware, however, of the construction and arrangement of parts such I as Iemploy for automatically spreading the meet the barrel at some distancebeyond the plane of the clampin devices, and a springpressed conical memer sliding upon the rod, at some distance from said devices and norand apl mally pressing the marginal portion only of said flange against thebarrel wall.

2. The combination with a pump barrel er rod therein bearing a rigidplunger bo y materially smaller than the Interior of the barrel, of apliable disk of like size clamped to said disk and having a freemarginal flan e extending obliquely to the barrel, a rigi cone slidingon said rod, at some distance from the lane of the clampi devices, andfitting witliin the free margina portion of said flange, and a springurging the cone toward the smaller portion of the flane and pressing itsfree margin against the arrel wall.

having a lateral outlet, of a plunger rod arranged for reciprocating inthe barrel, two

widely separated, oppositely turned plungers each materially smallerthan its barrel secured to the rod upon opposite sides of said outlet,and-each carryin an annular cup-like packi ring of plia le material,having its free ange diverging to meet the barrel at some distance fromthe plane of the devices which hold it, two oppositely turned conicalcup-expandin members slidably mounted upon t e rod etween the plungers,and adjustable rod-encircling springs yieldingly urgin the cup-expandininto the pac 'ng rings,-respective y.

In testimony whereof I aflix my signature, in presence of two witnesses.

SAMUEL GAUTSCHE.

members

